#!/usr/bin/python2.5

#

# Copyright 2008 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Redirect related methods.

"""

__authors__ = [

  '"Sverre Rabbelier" <sverre@rabbelier.nl>',

  '"Lennard de Rijk" <ljvderijk@gmail.com>',

  ]

from google.appengine.ext import db

def getInviteRedirect(entity, params):

  """Returns the invitation redirect for the specified entity.

  """

  result ='/%s/invite/%s' % (

      params['url_name'], entity.key().name())

  return result

def getCreateRedirect(entity, params):

  """Returns the create program redirect for the specified entity.

  """

  result ='/%s/create/%s' % (

      params['url_name'], entity.key().name())

  return result

def getEditRedirect(entity, params):

  """Returns the edit redirect for the specified entity.

  """

  return '/%s/edit/%s' % (

      params['url_name'], entity.key().name())

def getPublicRedirect(entity, params):

  """Returns the public redirect for the specified entity.

  """

  return '/%s/show/%s' % (

      params['url_name'], entity.key().name())

def getExportRedirect(entity, params):

  """Returns the export redirect for the specified entity.

  """

  return '/%s/export/%s' % (

      params['url_name'], entity.key().name())

def getHomeRedirect(entity, params):

  """Returns the home redirect for the specified entity.

  """

  return '/%s/home/%s' % (

      params['url_name'], entity.key().name())

def getReviewRedirect(entity, params):

  """Returns the redirect to review the specified entity.

  """

  return '/%s/review/%s' % (

      params['url_name'], entity.link_id)

def getCreateRequestRedirect(entity, params):

  """Returns the create request redirect for the specified entity.

  """

  result ='/request/create/%s/%s/%s' % (

      params['group_scope'], params['url_name'], entity.key().name())

  return result

def getListRequestsRedirect(entity, params):

  """Returns the redirect for the List Requests paged for the given

  Group entity and Group View params.

  """

  result = '/%s/list_requests/%s' % (

      params['url_name'], entity.key().name())

  return result

def getProcessRequestRedirect(entity, _):

  """Returns the redirect for processing the specified request entity

  """

  result = '/%s/process_request/%s/%s' % (

      entity.role, entity.scope_path, entity.link_id)

  return result

def getSelectRedirect(entity, params):

  """Returns the pick redirect for the specified entity.

  """

  if entity:

    result = '/%s/pick?scope_path=%s&field=%s&continue=%s' % (

        params['url_name'], entity.key().name(),

        params['field_name'], params['return_url'])

  else:

    result = '/%s/pick?field=%s&continue=%s' % (

        params['url_name'], params['field_name'], params['return_url'])

  return result

def getReturnRedirect(return_url, field):

  """Returns a function that has return_url and field embedded.

  """

  def wrapped(entity, params):

    """Returns the return redirect for the specified entity.

    """

    result = '%s?field=%s&value=%s' % (

        return_url, field, entity.link_id)

    return result

  return wrapped

def getInviteAcceptedRedirect(entity, _):

  """Returns the redirect for accepting an invite.

  """

  return '/%s/accept_invite/%s/%s' % (

      entity.role, entity.scope_path, entity.link_id)

def getInviteProcessRedirect(entity, _):

  """Returns the redirect for processing an invite.

  """

  return '/request/process_invite/%s/%s/%s' % (

      entity.scope_path, entity.role, entity.link_id)

def getApplicantRedirect(entity, params):

  """Returns the redirect for processing accepted Applications.

  """

  return '/%s/applicant/%s' % (

      params['url_name'], entity.link_id)

def getToSRedirect(presence):

  """Returns link to 'show' the ToS Document if it exists, None otherwise.

  Args:

    presence: Presence entity that may or may not have a tos property

  """

  if not presence:

    return None

  try:

    tos_doc = presence.tos

  except db.Error:

    return None

  if not tos_doc:

    return None

  return getPublicRedirect(tos_doc, {'url_name': 'document'})